2101346245861 has 2 divisors, whose sum is σ = 2101346245862. Its totient is φ = 2101346245860.

The previous prime is 2101346245813. The next prime is 2101346245879. The reversal of 2101346245861 is 1685426431012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1556231300100 + 545114945761 = 1247490^2 + 738319^2 .

It is a cyclic number.

It is not a de Polignac number, because 2101346245861 - 2¹⁵ = 2101346213093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2101346245811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050673122930 + 1050673122931.

It is an arithmetic number, because the mean of its divisors is an integer number (1050673122931).

Almost surely, 2^{2101346245861} is an apocalyptic number.

It is an amenable number.

2101346245861 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101346245861 is an equidigital number, since it uses as much as digits as its factorization.

2101346245861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 276480, while the sum is 43.

The spelling of 2101346245861 in words is "two trillion, one hundred one billion, three hundred forty-six million, two hundred forty-five thousand, eight hundred sixty-one".